Merge pull request #38 from scicloj/linalg1

linear algebra intro - draft

notebooks/chapters.edn

@@ -11,4 +11,6 @@
              "interactions_ols"]}
  {:part "Data Visualization"
   :chapters ["echarts"
-             "visualizing_correlation_matrices"]}]
+             "visualizing_correlation_matrices"]}
+ {:part "Linear Algebra"
+  :chapters ["linear_algebra_intro"]}]

notebooks/noj_book/linear_algebra_intro.clj

@@ -0,0 +1,21 @@
+;; # Intro to Linear Algebra - DRAFT 🛠
+
+;; In this tutorial, we introduce basic linear algebra concepts
+;; and the way they can be computed using [Fastmath](https://github.com/generateme/fastmath).
+
+;; For additional backgrounds, see
+;; [Introduction to Applied Linear Algebra – Vectors, Matrices, and Least Squares](https://web.stanford.edu/~boyd/vmls/)
+;; by Stephen Boyd & Lieven Vandenberghe, Cambridge University Press, UK, 2018.
+
+(ns noj-book.linear-algebra-intro
+  (:require [fastmath.vector :as vec]))
+
+;; ## Addition
+
+(vec/add [1 9]
+         [0 -3])
+
+;; ## Scalar multiplication
+
+(vec/mult [1 9]
+          1000)